| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Inst. Res T/A Eco Micro & Mac: PS | 978-1-57259-046-5 (1-57259-046-7) | 1998 | Timothy Tregarthen · Sarah Tinkler |
| Instruct Res T/A Prin Econ Tregarthen | 978-1-57259-047-2 (1-57259-047-5) | 1996 | Timothy Tregarthen · Sarah Tinkler |